Floor drain



. A. HESS ET A;

FLOOR DRAIN Filed Nov. 14. 1922 1N VE'N T ORS flr/hur fleas Samue/ L. Mans/7 AT 7" OENE'YS Patented Get. 2, 1923.

u t i s a i p FLOOR nia irn. v

Application filed November re, 1922'. Serial No. 600,844.

Toa-llwhomitmay 0092607 724 7 Be it known that we, ARTHUR Hess and SAMUEL L. MAnsH, both citizens of the United States, and residents of Los Angeles, in the county of Los Angeles and State of California, have invented new and useful Improvements in a Floor Drain, of which the following is a specification.

This invention relates to a drain for flooring made of cementitious material, such as concrete or compositions, and pertains particularly to the provision of a self-contained drain and trap. The employment of such drain is advantageous in shower, wash, or toilet room fi0ors,in hospitals and other institutions where water or like liquid is to be drained from the floor into a sewer, in the roofs of buildings, in refrigerators and for many other purposes.

The expansion and contraction of cementitious floors will not permit a watertight joint around the rim or collar. To overcome this difficulty, drains have been constructed with annular cups to catch the seepage around the rim and lead it back into the drain. The present invention contemplates a structure of this character and has for its primary object the provision of a combined drain and trap having structural features which make it compact, easily installed, simple, economical, long lived, and easily cleaned.

These objects together with other objects and corresponding accomplishments are obtained by means of the embodiment of our invention illustrated in the accompanying drawing, in which:

The figure shows a perspective view with a section broken out to show the internal construction.

Referring more particularly to the drawing, a tubular outlet is indicated by 1. Preferably formed integral therewith and extending laterally intermediate the ends of the outlet is a. cup 2. This cup has a side wall flaring outwardly. Extending above the top of the outlet is a bridge 3.

Disposed over the outlet is a double hood in the nature of an inverted double cup serving as a strainer and as a. portion of a trap. This hood comprises a top wall 4: intended to be set flush with the floor. Extending downwardly therefrom is an outer cylindrical wall 5 having a serrated edge. The hood is attached to the bridge by means of a set screw 6, the relative dimension? should be such that the bottoni of tliewall'5 rests upon'the bottoinof the; cup '2 so that water may pass there-under. Disposed with in the outer wall'5 concentric therewith and spaced therefrom'is an'inner wall 7i 'This wall'e-nds short' of the bottom wall of the cup so as to provide 'a trap, one arm of which is the annular chamber between the walls 5 and 7, and the other arm of which is the annular chamber between the walls 1 and 7. These chambers are so arranged that the trap is absolutely non-siphoning. Communicating with the space between the walls 5 and 7 are a number of strainer holes 8 for the admission of the water to be drained.

In installing the drain, the cup is embedded within the cement or other composition flooring so that it is filled and is below the surface thereof. The joint between the flooring and the rim or wall '5 is open at the surface so that water may seep therethrough.

a cup extending laterally therefrom inter-' mediate its ends, an inner hood wall closed at the top nested over and spaced above the top of said outlet, and an outerhood wall spaced from said inner hood Wall and having seepage inlets along the lower edge, there being drainage inlets 'to thespace between said walls, said outlets and said hood walls forming a bell trap.

52. A drain comprising a tubular outlet,

a cup extending laterally therefrom intermediate itsends, a double hood nested over said outlet, said hood comprising spaced cylindrical walls and a top, the inner cylindrical wall ending short of the bottom of the outer cylindrical wall and the top thereof being imperforate, there being seepage inlets around the lower edge of said outer wall and there being drainage inlets t the space between said walls, said outlets and said hood forming a bell trap.

3. A drain comprising a tubular outlet, a cup extending laterally therefrom intermed ate its ends, a hood. detachably secured.

to said outlet, said hood-comprising an in ner hood Wall closedhy an imperforate top and nested over'and spaced from the top of said'outlet and an'outer hood Wall spaced from said inner hood Wall and having seepage inlets along the lower edge thereof; there being drainage inlets to the space between said walls; said outlet and said hood forming a bell trap. V I y 4. A drain comprising a tubular outlet, a cup extending laterally therefrom intermediate its ends, a doubie'hood detachabiy secured'over saidoutlet, said hood comprising two spaced cylindrical Walls and a top,

the inner cylindrical Wall ending short of the bottom of the oilter cylindrical Wall and the top thereof being imperforate, the outer cylindrical Wall having seepage inlets be tween its lower edge andthe cup, there be ing drainage inlets t the space between said Walls, said outlet and saidhood forming a'trap. r V V In Witness that We claim the foregoing we have hereunto subscribed our names this 4th day OfNOVEHllOGI'flQQQQ.

ARTHUR miss. SAMUEL n MARSH. 

